linux-kernel - Re: [PATCH v2 2/7] Adding general performance benchmarking subcommand to perf.

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Date:	Tue, 3 Nov 2009 18:26:57 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc:	linux-kernel@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Mike Galbraith <efault@....de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frédéric_Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH v2 2/7] Adding general performance benchmarking
	subcommand to perf.


* Hitoshi Mitake <mitake@....info.waseda.ac.jp> wrote:

> Adding general performance benchmarking subcommand to perf.
> This patch adds bench/sched-messaging.c.
> This benchmark measures performance of scheduler and IPC mechanisms,
> and is based on hackbench by Rusty Russell.
> 
> Example of use:
> 
> % perf bench sched messaging               # Use default options
> 0.295					   # Result is time
> % perf bench sched messaging -p -l 1000 -t
> 2.265

Would be nice to standardize the options too, and offer a help line:

 perf bench sched --help

perhaps 'perf bench sched' should list all available benchmark modules, 
and print a oneliner summary about each of them?

	Ingo
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